GXT 3 Demo site not loading on iPad 1

Note this did work in GXT 3 beta 2. When we try and load the demo site with our test iPad 1 running iOS 5.1.1 none of the controls load. In our actual GXT 3 application safari crashes with an oom error.

The demo site does load in the iPad 2 and 3.

Should GXT 3 work on the iPad 1 and in general does Sencha support GXT 3 on iPads?